X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=geni%2Fslicemgr.py;h=5ecf8e09c7782a5dc7f0934f9b0fc83b9b9dd251;hb=5a04ddd0df353a10f926ceaddfddd88f17997e85;hp=7448b58f5ad6cc4680df8d5cee7401b793f498e3;hpb=4eb8b240542587ffe7264f014fa7d00f23f93a37;p=sfa.git diff --git a/geni/slicemgr.py b/geni/slicemgr.py index 7448b58f..5ecf8e09 100644 --- a/geni/slicemgr.py +++ b/geni/slicemgr.py @@ -5,31 +5,11 @@ import time from geni.util.geniserver import * from geni.util.geniclient import * -from geni.util.cert import * -from geni.util.credential import Credential -from geni.util.trustedroot import * from geni.util.excep import * from geni.util.misc import * -from geni.util.config import * -from geni.util.rspec import Rspec -from geni.util.specdict import * -from geni.util.storage import SimpleStorage, XmlStorage class SliceMgr(GeniServer): - hrn = None - nodes_ttl = None - nodes = None - slices = None - policy = None - aggregates = None - timestamp = None - threshold = None - shell = None - registry = None - key_file = None - cert_file = None - credential = None ## # Create a new slice manager object. @@ -41,425 +21,4 @@ class SliceMgr(GeniServer): def __init__(self, ip, port, key_file, cert_file, config = "/usr/share/geniwrapper/geni/util/geni_config"): GeniServer.__init__(self, ip, port, key_file, cert_file) - self.key_file = key_file - self.cert_file = cert_file - self.config = Config(config) - self.basedir = self.config.GENI_BASE_DIR + os.sep - self.server_basedir = self.basedir + os.sep + "geni" + os.sep - self.hrn = self.config.GENI_INTERFACE_HRN - self.time_format = "%Y-%m-%d %H:%M:%S" - - # Get list of aggregates this sm talks to - aggregates_file = self.server_basedir + os.sep + 'aggregates.xml' - connection_dict = {'hrn': '', 'addr': '', 'port': ''} - self.aggregate_info = XmlStorage(aggregates_file, {'aggregates': {'aggregate': [connection_dict]}} ) - self.aggregate_info.load() - - # Get cached list of nodes (rspec) - nodes_file = os.sep.join([self.server_basedir, 'smgr.' + self.hrn + '.components']) - self.nodes = SimpleStorage(nodes_file) - self.nodes.load() - - # Get cacheds slice states - slices_file = os.sep.join([self.server_basedir, 'smgr.' + self.hrn + '.slices']) - self.slices = SimpleStorage(slices_file) - self.slices.load() - - # Get the policy - policy_file = os.sep.join([self.server_basedir, 'smgr.' + self.hrn + '.policy']) - self.policy = SimpleStorage(policy_file, {'whitelist': [], 'blacklist': []}) - self.policy.load() - - # How long before we refresh nodes cache - self.nodes_ttl = 1 - - self.connectRegistry() - self.loadCredential() - self.connectAggregates() - - - def loadCredential(self): - """ - Attempt to load credential from file if it exists. If it doesnt get - credential from registry. - """ - - # see if this file exists - ma_cred_filename = self.server_basedir + os.sep + "smgr." + self.hrn + ".sa.cred" - try: - self.credential = Credential(filename = ma_cred_filename) - except IOError: - self.credential = self.getCredentialFromRegistry() - - - def getCredentialFromRegistry(self): - """ - Get our current credential from the registry. - """ - # get self credential - self_cred_filename = self.server_basedir + os.sep + "smgr." + self.hrn + ".cred" - self_cred = self.registry.get_credential(None, 'ma', self.hrn) - self_cred.save_to_file(self_cred_filename, save_parents=True) - - # get ma credential - ma_cred_filename = self.server_basedir + os.sep + "smgr." + self.hrn + ".sa.cred" - ma_cred = self.registry.get_credential(self_cred, 'sa', self.hrn) - ma_cred.save_to_file(ma_cred_filename, save_parents=True) - return ma_cred - - def connectRegistry(self): - """ - Connect to the registry - """ - # connect to registry using GeniClient - address = self.config.GENI_REGISTRY_HOSTNAME - port = self.config.GENI_REGISTRY_PORT - url = 'http://%(address)s:%(port)s' % locals() - self.registry = GeniClient(url, self.key_file, self.cert_file) - - def connectAggregates(self): - """ - Get connection details for the trusted peer aggregates from file and - create a GeniClient connection to each. - """ - self.aggregates = {} - aggregates = self.aggregate_info['aggregates']['aggregate'] - if isinstance(aggregates, dict): - aggregates = [aggregates] - if isinstance(aggregates, list): - for aggregate in aggregates: - # create xmlrpc connection using GeniClient - hrn, address, port = aggregate['hrn'], aggregate['addr'], aggregate['port'] - if not hrn or not address or not port: - continue - url = 'http://%(address)s:%(port)s' % locals() - self.aggregates[hrn] = GeniClient(url, self.key_file, self.cert_file) - - def item_hrns(self, items): - """ - Take a list of items (components or slices) and return a dictionary where - the key is the authoritative hrn and the value is a list of items at that - hrn. - """ - item_hrns = {} - agg_hrns = self.aggregates.keys() - for agg_hrn in agg_hrns: - item_hrns[agg_hrn] = [] - for item in items: - for agg_hrn in agg_hrns: - if item.startswith(agg_hrn): - item_hrns[agg_hrn] = item - - return item_hrns - - - def hostname_to_hrn(self, login_base, hostname): - """ - Convert hrn to plantelab name. - """ - genihostname = "_".join(hostname.split(".")) - return ".".join([self.hrn, login_base, genihostname]) - - def slicename_to_hrn(self, slicename): - """ - Convert hrn to planetlab name. - """ - slicename = slicename.replace("_", ".") - return ".".join([self.hrn, slicename]) - - def refresh_components(self): - """ - Update the cached list of nodes. - """ - - # convert and threshold to ints - if self.nodes.has_key('timestamp') and self.nodes['timestamp']: - hr_timestamp = self.nodes['timestamp'] - timestamp = datetime.datetime.fromtimestamp(time.mktime(time.strptime(hr_timestamp, self.time_format))) - hr_threshold = self.nodes['threshold'] - threshold = datetime.datetime.fromtimestamp(time.mktime(time.strptime(hr_threshold, self.time_format))) - else: - timestamp = datetime.datetime.now() - hr_timestamp = timestamp.strftime(self.time_format) - delta = datetime.timedelta(hours=self.nodes_ttl) - threshold = timestamp + delta - hr_threshold = threshold.strftime(self.time_format) - - start_time = int(timestamp.strftime("%s")) - end_time = int(threshold.strftime("%s")) - duration = end_time - start_time - - aggregates = self.aggregates.keys() - rspecs = {} - networks = [] - rspec = Rspec() - for aggregate in aggregates: - try: - # get the rspec from the aggregate - agg_rspec = self.aggregates[aggregate].list_nodes(self.credential) - # extract the netspec from each aggregates rspec - rspec.parseString(agg_rspec) - networks.extend([{'NetSpec': rspec.getDictsByTagName('NetSpec')}]) - except: - # XX print out to some error log - print "Error calling list nodes at aggregate %s" % aggregate - raise - - # create the rspec dict - resources = {'networks': networks, 'start_time': start_time, 'duration': duration} - resourceDict = {'Rspec': resources} - # convert rspec dict to xml - rspec.parseDict(resourceDict) - - # filter according to policy - rspec.filter('NodeSpec', 'name', blacklist=self.policy['blacklist'], whitelist=self.policy['whitelist']) - - # update timestamp and threshold - timestamp = datetime.datetime.now() - hr_timestamp = timestamp.strftime(self.time_format) - delta = datetime.timedelta(hours=self.nodes_ttl) - threshold = timestamp + delta - hr_threshold = threshold.strftime(self.time_format) - - nodedict = {'rspec': rspec.toxml(), - 'timestamp': hr_timestamp, - 'threshold': hr_threshold} - - self.nodes = SimpleStorage(self.nodes.db_filename, nodedict) - self.nodes.write() - - def load_policy(self): - """ - Read the list of blacklisted and whitelisted nodes. - """ - self.policy.load() - - def load_slices(self): - """ - Read current slice instantiation states. - """ - self.slices.load() - - - def getNodes(self, format = 'rspec'): - """ - Return a list of components managed by this slice manager. - """ - # Reload components list - if not self.nodes.has_key('threshold') or not self.nodes['threshold'] or not self.nodes.has_key('timestamp') or not self.nodes['timestamp']: - self.refresh_components() - else: - now = datetime.datetime.now() - threshold = datetime.datetime.fromtimestamp(time.mktime(time.strptime(self.nodes['threshold'], self.time_format))) - if now > threshold: - self.refresh_components() - return self.nodes[format] - - - def getSlices(self): - """ - Return a list of instnatiated managed by this slice manager. - """ - slice_hrns = [] - for aggregate in self.aggregates: - try: - slices = self.aggregates[aggregate].list_slices(self.credential) - slice_hrns.extend(slices) - except: - raise - # print to some error log - pass - - return slice_hrns - - def getResources(self, slice_hrn): - """ - Return the current rspec for the specified slice. - """ - - # request this slices state from all known aggregates - rspec = Rspec() - rspecdicts = [] - networks = [] - for hrn in self.aggregates.keys(): - # check if the slice has resources at this hrn - slice_resources = self.aggregates[hrn].get_resources(self.credential, slice_hrn) - rspec.parseString(slice_resources) - networks.extend({'NetSpec': rspec.getDictsByTagName('NetSpec')}) - - # merge all these rspecs into one - start_time = int(datetime.datetime.now().strftime("%s")) - end_time = start_time - duration = end_time - start_time - - resources = {'networks': networks, 'start_time': start_time, 'duration': duration} - resourceDict = {'Rspec': resources} - # convert rspec dict to xml - rspec.parseDict(resourceDict) - # save this slices resources - #self.slices[slice_hrn] = rspec.toxml() - #self.slices.write() - - return rspec.toxml() - - def createSlice(self, cred, slice_hrn, rspec): - """ - Instantiate the specified slice according to whats defined in the rspec. - """ - - # save slice state locally - # we can assume that spec object has been validated so its safer to - # save this instead of the unvalidated rspec the user gave us - spec = Rspec() - tempspec = Rspec() - spec.parseString(rspec) - - self.slices[slice_hrn] = spec.toxml() - self.slices.write() - - # extract network list from the rspec and create a separate - # rspec for each network - slicename = hrn_to_pl_slicename(slice_hrn) - specDict = spec.toDict() - if specDict.has_key('Rspec'): specDict = specDict['Rspec'] - if specDict.has_key('start_time'): start_time = specDict['start_time'] - else: start_time = 0 - if specDict.has_key('end_time'): end_time = specDict['end_time'] - else: end_time = 0 - - rspecs = {} - # only attempt to extract information about the aggregates we know about - for hrn in self.aggregates.keys(): - netspec = spec.getDictByTagNameValue('NetSpec', hrn) - if netspec: - # creat a plc dict - resources = {'start_time': start_time, 'end_time': end_time, 'networks': netspec} - resourceDict = {'Rspec': resources} - tempspec.parseDict(resourceDict) - rspecs[hrn] = tempspec.toxml() - - # notify the aggregates - for hrn in rspecs.keys(): - self.aggregates[hrn].create_slice(self.credential, slice_hrn, rspecs[hrn]) - - return 1 - - def updateSlice(self, slice_hrn, rspec, attributes = []): - """ - Update the specifed slice - """ - self.create_slice(slice_hrn, rspec, attributes) - - def deleteSlice_(self, slice_hrn): - """ - Remove this slice from all components it was previouly associated with and - free up the resources it was using. - """ - # XX need to get the correct credential - cred = self.credential - - if self.slices.has_key(slice_hrn): - self.slices.pop(slice_hrn) - self.slices.write() - - for hrn in self.aggregates.keys(): - self.aggregates[hrn].deleteSlice(cred, slice_hrn) - - return 1 - - def startSlice(self, slice_hrn): - """ - Stop the slice at plc. - """ - cred = self.credential - - for hrn in self.aggregates.keys(): - self.aggregates[hrn].startSlice(cred, slice_hrn) - return 1 - - def stopSlice(self, slice_hrn): - """ - Stop the slice at plc - """ - cred = self.credential - for hrn in self.aggregates.keys(): - self.aggregates[hrn].startSlice(cred, slice_hrn) - return 1 - - def resetSlice(self, slice_hrn): - """ - Reset the slice - """ - # XX not yet implemented - return 1 - - def getPolicy(self): - """ - Return the policy of this slice manager. - """ - - return self.policy - - - -############################## -## Server methods here for now -############################## - - def list_nodes(self, cred): - self.decode_authentication(cred, 'listnodes') - return self.getNodes() - - def list_slices(self, cred): - self.decode_authentication(cred, 'listslices') - return self.getSlices() - - def get_resources(self, cred, hrn=None): - self.decode_authentication(cred, 'listnodes') - if not hrn: - return self.getNodes() - else: - return self.getResources(hrn) - - def get_ticket(self, cred, hrn, rspec): - self.decode_authentication(cred, 'getticket') - return self.getTicket(hrn, rspec) - - def get_policy(self, cred): - self.decode_authentication(cred, 'getpolicy') - return self.getPolicy() - - def create_slice(self, cred, hrn, rspec): - self.decode_authentication(cred, 'createslice') - return self.createSlice(cred, hrn, rspec) - - def delete_slice(self, cred, hrn): - self.decode_authentication(cred, 'deleteslice') - return self.deleteSlice(hrn) - - def start_slice(self, cred, hrn): - self.decode_authentication(cred, 'startslice') - return self.startSlice(hrn) - - def stop_slice(self, cred, hrn): - self.decode_authentication(cred, 'stopslice') - return self.stopSlice(hrn) - - def reset_slice(self, cred, hrn): - self.decode_authentication(cred, 'resetslice') - return self.resetSlice(hrn) - - def register_functions(self): - GeniServer.register_functions(self) - - # Aggregate interface methods - self.server.register_function(self.list_nodes) - self.server.register_function(self.list_slices) - self.server.register_function(self.get_resources) - self.server.register_function(self.get_policy) - self.server.register_function(self.create_slice) - self.server.register_function(self.delete_slice) - self.server.register_function(self.start_slice) - self.server.register_function(self.stop_slice) - self.server.register_function(self.reset_slice) - + self.server.interface = 'slicemgr'